跌扩型底流消能工压力分布特性的试验研究  

Experimental Study on Characteristic of Pressure Distribution about the Falling-sill and Expanding Bottom-flow Energy Dissipater

作　　者：陈朝[1] 毛舒娅[1] 黄海艳[1] 陈文鑫[1] 

机构地区：[1]昆明理工大学电力工程学院,昆明650051

出　　处：《南水北调与水利科技》2011年第1期36-39,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：云南省自然科学基金(2006A0018M)

摘　　要：通过水力学模型试验着重分析了突扩比、跌坎深度和入池水流弗劳德数Fr0对消力池底板冲击区动水压力的影响。研究结果表明,在跌扩型底流消能工中,选择合适的突扩比、跌坎深度和入池水流弗劳德数Fr0,能有效降低消力池内底板和边墙的水力学指标。他们在一定的最优组合下,可既保证消力池中消能率高,又能满足消力池底板和边墙处动水冲击压力小的要求,避免造成底板板块的失稳破坏。Based on the method of hydraulic test the influence of expansion ratio, depth of the failing sill and the flowing-in Froude number on the hydro-dynamic pressure in impact area of the stilling basin bottom is analyzed emphatically. The research results show choosing the appropriate expansion ratio,depth of the falling-sill and the flowing-in Froude number can lower the hydraulics indicators of the stilling basin bottom and the sidewall effectively in the falling-sill and expanding bottom flow energy dissipater. Under the optimum combination they can not only keep the energy dissipate ratio higher but also can keep the hydro-dynamic pressure lower to avert the bottom plates from levee slipping in impact area of the stilling basin bottom and the sidewall.

关 键 词：水力学 压力分布 试验研究 跌扩型底流消能工 弗劳德数Fr0 突扩比 跌坎深度 

分 类 号：TV135[水利工程—水力学及河流动力学]